Lepiota clypeolaria

Shaggy-stalked Lepiota

A slender Lepiota with a brownish, finely scaly cap and a stem that is coated below the ring zone in woolly, cottony veil material. DNA work shows that the traditional concept covers several species, including Lepiota magnispora, and the North American range of true L. clypeolaria is uncertain. It is considered poisonous. Its genus includes deadly amatoxin-containing species.

Species profile

Edibility: Toxic
Poisonous; do not eat. Sgambelluri et al. (2014) found no amatoxins in it, but it is still regarded as toxic. Similar small Lepiotas, including L. brunneoincarnata, L. castanea, L. subincarnata (= L. josserandii) and L. helveola, contain amatoxins and have caused fatal liver failure; symptoms are delayed. No small Lepiota should ever be eaten; get emergency care after any ingestion.

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Distribution

Reported across the northern temperate zone (Europe, Asia and North America) and from South America. In North America the name has been applied to several species. MushroomExpert reports true L. clypeolaria from the Rocky Mountains, L. magnispora from California and the Rockies, and an unnamed similar species from the East.

Characteristics

Cap: 3-7 cm, egg-shaped to bell-shaped, becoming nearly flat with a low umbo, beige to dull orange-brown with small soft scales on a paler background and a darker, smoother center; margin often hung with white veil fragments. Gills: free, close, white. Stem: about 4-7 cm long, 6-12 mm thick, with a fragile pale yellowish to whitish ring zone, and woolly to shaggy below it. Flesh: white; odor not distinctive. Spore print: white. Spores: long-fusiform, about 12-18 x 4-6 um, dextrinoid.